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my friend found a mod that would allow him to play as a jackal in online(i have no idea why he would want to do thta cause jackals suck) but anyway if no where there r any mods like that please post the link here
Go get Custom Edition and go to http://www.halomaps.org to hopefully find the map you're looking for.
I downloaded the demo from microsoft yesterday and its amazing how many people suck, so they have to mod to win. It realy brings down the fun of it, Totaly turned me off and I'm not gonna get halo PC